package loader

import (
	"context"
	"time"
)

// backgroundLoop периодически проверяет доступность соединения и наличие новых версий на сервере
func (l *loader) backgroundLoop(ctx context.Context, stop <-chan struct{}) {
	checkConnTimer := time.NewTimer(checkConnectionTimeout)
	checkVersionTimer := time.NewTimer(checkVersionTimeout)
	defer func() {
		checkConnTimer.Stop()
		checkVersionTimer.Stop()
	}()
	for {
		select {
		case <-ctx.Done():
			l.client.Shutdown()
			return
		case <-stop:
			return
		case <-checkConnTimer.C:
			isGood := l.connector.CheckConnection()
			l.client.OnConnection(isGood)
			checkConnTimer.Reset(checkConnectionTimeout)
		case <-checkVersionTimer.C:
			if err := l.checkAndDownloadPluginVersion(); err != nil {
				l.onConnectionError(err) // TODO: separate error types for: onConnectionError / onStorageError / onServiceError
			}
			checkVersionTimer.Reset(checkVersionTimeout)
		}
	}
}